Use modern auth options for Neutron
Use modern auth options for Neutron

auth plugins should be used instead of deprecated admin_* options

Change-Id: I80da7ce0a3d11859dd9f2ae02cd9761b9b28ac27
Depends-on: I3018932a106df562e94067e037b3bc862be97b51

openstack/puppet-tripleo,openstack/puppet-tripleo,openstack/puppet-tripleo